Power Conversion Apparatus

Abstract

Provided are a positive electrode terminal and a negative electrode terminal being terminals of a capacitor element; a positive electrode conductor plate connected to the positive electrode terminal; a negative electrode conductor plate connected to the negative electrode terminal; and a power conversion module connected to the two conductor plates. The positive electrode terminal and the negative electrode terminal are formed along an arrangement direction of the capacitor element. The positive electrode conductor plate and the negative electrode conductor plate form a laminated conductor portion in which the positive electrode conductor plate and the negative electrode conductor plate have respective main surfaces disposed, to face the main surface of the capacitor element, and are laminated to each other. The laminated conductor portion has a first laminated region laminated to face a main surface of the negative electrode terminal and a second laminated region laminated to face a main surface of the positive electrode terminal.

1 . A power conversion apparatus comprising:
 a positive electrode terminal and a negative electrode terminal being terminals of a capacitor element;   a positive electrode conductor plate connected to the positive electrode terminal;   a negative electrode conductor plate connected to the negative electrode terminal; and   a power conversion module connected to the positive electrode conductor plate and the negative electrode conductor plate, the power conversion module configured to convert DC power and AC power into each other,   wherein the positive electrode terminal and the negative electrode terminal are formed along an arrangement direction of the capacitor element,   the positive electrode conductor plate and the negative electrode conductor plate form a laminated conductor portion in which the positive electrode conductor plate and the negative electrode conductor plate have respective main surfaces disposed, to face the main surface of the capacitor element, and are laminated to each other, and   the laminated conductor portion has a first laminated region laminated to face a main surface of the negative electrode terminal and a second laminated region laminated to face a main surface of the positive electrode terminal.   
     
     
         2 . The power conversion apparatus according to  claim 1 , wherein a tip of the negative electrode terminal is connected to an end portion of the first laminated region. 
     
     
         3 . The power conversion apparatus according to  claim 2 , wherein a tip of the positive electrode terminal is connected to an end portion of the second laminated region. 
     
     
         4 . The power conversion apparatus according to  claim 3 , wherein an end portion of the first laminated region and an end portion of the second laminated region are respectively connected to a tip of the negative electrode terminal and a tip of the positive electrode terminal by TIG welding. 
     
     
         5 . The power conversion apparatus according to  claim 3 , wherein an end portion of the first laminated region and an end portion of the second laminated region are respectively connected to a tip of the negative electrode terminal and a tip of the positive electrode terminal by laser welding. 
     
     
         6 . The power conversion apparatus according to  claim 3 , wherein an end portion of the first laminated region and an end portion of the second laminated region are respectively connected to a tip of the negative electrode terminal and a tip of the positive electrode terminal by a screw terminal. 
     
     
         7 . The power conversion apparatus according to  claim 3 , wherein in the laminated conductor portion, an end portion on a side opposite to a side where an end portion of the first laminated region and an end portion of the second laminated region are provided is connected to the power conversion module. 
     
     
         8 . The power conversion apparatus according to  claim 7 , wherein
 the power conversion module is housed in a housing casing through a cooling fin, and   the capacitor element is housed in the housing casing through an adhesive resin.   
     
     
         9 . The power conversion apparatus according to  claim 1 , wherein neither the positive electrode conductor plate nor the negative electrode conductor plate has a penetrating portion for passing the positive electrode terminal or the negative electrode terminal.